Non Buffered Matboard For Ilfochromes

I hear that ilfochromes should be mounted with non-buffered matboard, to prevent the alkaline buffering chemical in buffered mat boards from affecting the print . Has anyone had any experience with degredation of prints with buffered mats? I cant seem to find any un buffered here in Australia.

Thanks

I have used buffered matboards, not knowing about this, and the 7 years old fram ings I have here are not showing any degradation. But who knows, in 120 years?